feat(app): improve desktop multi-server support (#30678)

Co-authored-by: Brendan Allan <git@brendonovich.dev>

packages/app/src/context/server.test.ts

@@ -1,5 +1,8 @@
 import { describe, expect, test } from "bun:test"
-import { resolveServerList, ServerConnection } from "./server"
+import { createRoot, createSignal } from "solid-js"
+import { createStore } from "solid-js/store"
+import { createServerProjects, migrateCanonicalLocalServerState, resolveServerList, ServerConnection } from "./server"
+import { ServerScope } from "@/utils/server-scope"
 
 describe("resolveServerList", () => {
   test("lets startup auth_token credentials override a persisted same-url server", () => {
@@ -51,3 +54,70 @@ describe("resolveServerList", () => {
     expect(list[0]?.type === "http" ? list[0].authToken : true).toBeUndefined()
   })
 })
+
+describe("createServerProjects", () => {
+  test("keeps active and explicit server buckets in one reactive store", () => {
+    createRoot((dispose) => {
+      const [scope] = createSignal(ServerScope.local)
+      const [store, setStore] = createStore({ projects: {}, lastProject: {} })
+      const active = createServerProjects({ scope, store, setStore })
+      const remote = createServerProjects({ scope: () => "https://debian.example" as ServerScope, store, setStore })
+
+      remote.open("/repo")
+      expect(remote.list()).toEqual([{ worktree: "/repo", expanded: true }])
+      expect(active.list()).toEqual([])
+
+      const adopted = createServerProjects({ scope: () => "https://debian.example" as ServerScope, store, setStore })
+      expect(adopted.list()).toEqual([{ worktree: "/repo", expanded: true }])
+
+      adopted.close("/repo")
+      expect(remote.list()).toEqual([])
+      dispose()
+    })
+  })
+})
+
+describe("migrateCanonicalLocalServerState", () => {
+  test("moves an existing canonical web bucket into local scope", () => {
+    expect(
+      migrateCanonicalLocalServerState(
+        {
+          list: [],
+          projects: { "https://opencode.example.com": [{ worktree: "/remote", expanded: true }] },
+          lastProject: { "https://opencode.example.com": "/remote" },
+        },
+        ServerConnection.Key.make("https://opencode.example.com"),
+      ),
+    ).toEqual({
+      list: [],
+      projects: { local: [{ worktree: "/remote", expanded: true }] },
+      lastProject: { local: "/remote" },
+    })
+  })
+
+  test("preserves existing local state while merging a canonical web bucket", () => {
+    expect(
+      migrateCanonicalLocalServerState(
+        {
+          projects: {
+            local: [{ worktree: "/local", expanded: false }],
+            "https://opencode.example.com": [
+              { worktree: "/local", expanded: true },
+              { worktree: "/remote", expanded: true },
+            ],
+          },
+          lastProject: { local: "/local", "https://opencode.example.com": "/remote" },
+        },
+        ServerConnection.Key.make("https://opencode.example.com"),
+      ),
+    ).toEqual({
+      projects: {
+        local: [
+          { worktree: "/local", expanded: false },
+          { worktree: "/remote", expanded: true },
+        ],
+      },
+      lastProject: { local: "/local" },
+    })
+  })
+})